Impulse switch relay
A impulse switch is an electromagnetic switch that changes its switching state in the event of an electrical impulse. It is used in domestic installations to switch consumers that are controlled via buttons. It is often used to switch lights on and off, for example in the hallway.
A impulse switch changes its switching state when it receives an electrical impulse. When a button is pressed, it sends an electrical impulse to the impulse switch, which then changes its state and switches the connected load on or off.
A relay and a latching switch are both types of electromagnetic switch operated by a solenoid, but they work in different ways and are used for different purposes.
With a relay, a magnetic field is generated by supplying voltage to the copper coil, which then switches the relay contact. This means that the contact remains switched on as long as the coil is supplied with voltage. If the voltage is switched off, the relay returns to its original state . Relays are used in a variety of applications from industrial control systems, machine control, medical, to automotive. A relay is always useful when a "real" galvanic isolation of a circuit should and must take place.
A latching switch, on the other hand, also known as an impulse switch, changes its switching state with every electrical impulse and retains this state even after the end of the impulse (voltage supply). This means that a single button press can change the switching state of the impulse switch and this state is retained until another button press occurs. Latching switches are therefore particularly useful in situations where you want to control one or more loads from different locations , such as turning lights on and off in multi- story buildings .
Choosing the right impulse switch depends on the specific application and the needs of your installation. Consider the voltage (12V, 24V, 230V) and configuration (NO, SPDT, NC ) required for your installation.
A potential disadvantage of a latching circuit could be that in the event of a power outage or interruption in the power supply, the switching state of the latching circuit breaker is NOT reset. This can cause devices to turn on or off unexpectedly.
Installing a impulse switch requires expertise in electrical installation. First, the impulse switch is installed in the distribution. Then the buttons and the consumer are connected to the impulse switch. It should be noted that the neutral conductor of the consumer is connected directly to the neutral conductor of the network.
An off-delay impulse switch is a special type of impulse switch that has a built-in delay function. After receiving a pulse, it remains in its current state for a specified time before either automatically returning to the original state , or the off - delay only takes effect when switching after a new voltage pulse.
There are different types of impulse switches, depending on the required voltage (12V, 24V, 230V), current rating (20A, 25A, 40A, 63A) and configuration (NO, SPDT, NC). In addition , there are special models such as impulse switches with release delay , or impulse switches with increased inrush current (especially for LED lamps).
